Cadillac STS Forum - 2005 through 2012 Discussion, Will 2008 key fob work on 2006 ? in Past Cadillac Vehicle Discussion; So, has anyone gotten a definitive word from the dealer as to if this can be programmed? Do dealers still ...

Re: Will 2008 key fob work on 2006 ?

I purchased a 2008 FOB off of Ebay for my 2006 STS. I followed the instruction below which I got from this forum. I reprogrammed the 2008 FOB as #1 and my 2006 FOB #2 as #2 and the #1 FOB as #3.

Success - My wife's 2007 1SE is not a brick! Both FOB's work fine. Previously posted procedures (and the Owners Manual) are essentially correct but not perfect. I'm sure I won't be either but here's my attempt:

Matching Transmitters to Your Vehicle

There are three procedures based on your particular situation. Method 1 adds additional Transmitters (FOB's) when you have a known FOB. Method 2 adds FOB's when you have no known FOB's and one or more replacements (that have never been matched to your STS) in hand. Method 3 resets already known FOB(s) and allows up to 4 FOB's to be matched.

- Method 1 -
The Owners Manual is correct.

- Method 2 -
The Owners Manual contains this procedure but it is written such to suggest that the procedure pertains to Canadian owners. Based on my experience, it should work for US owners with no known FOB's needing to match one or more replacements. Please beware that the actual procedure may contain some small varience from the manual (see below) but is accurate enough to acheive success.

- Method 3 -
This procedure will first erase all known FOB's. The procedure will then program a single FOB or multiple FOB's. Like Method 2, Method 3 is a series of three 10-minute key cycles, for a total of 30 minutes. This procedure requires that you have the vehicle's mechanical key.

Important: Do not place any known good FOB's within 10 feet of the vehicle when programming with Method 3. If the vehicle recognizes a known good FOB during programming, the programming mode will resort to Method 1.

1. The vehicle must be OFF.
2. Insert the vehicle key in the driver door lock cylinder located in the driver door handle and cycle the key 5 times within 5 seconds. (I left the door open throughout.)
3. The DIC will display a message: OFF/ACC TO LEARN.
4. Press the OFF/ACC portion (bottom) of the ignition button.
5. The DIC will display a message: WAIT 10 MINUTES, and then begin to count down from 10 to 0, one minute at a time.
6. When the counter reaches 0, DIC will display OFF/ACC TO LEARN.
7. Repeat steps 4-6 two more times, for a total of 30 minutes.
8. At the end of the 30 minute cycle, the DIC will display OFF/ACC TO LEARN.
9. Press the OFF/ACC portion (bottom) of the ignition button.
10. A beep will occur and the DIC will display: NO FOBS RECOGNIZED. At this time all previously known FOB's have been erased. Then the DIC displays: READY FOR FOB 1.
11. Go get the FOB you want to be #1 and insert it in the FOB pocket. (According to a posting elsewhere on the STS Enthusiast Forum, new style square FOB's may need the key inserted in the FOB in order to be programmed.)
12. When FOB 1 is programmed, a beep will be heard and the DIC will display a message: READY FOR FOB 2.
13. Remove FOB 1 and set it aside. It does not need to be removed from the car.
14. Additional FOB's can be programmed by getting them and placing them in the pocket as prompted. If desired, up to 4 fobs can be programmed. Once 4 fobs have been learned, the DIC will display a message: MAX FOBS LEARNED, and automatically exit the program mode.
15. If learning less than 4 FOB's, press the OFF/ACC portion of the ignition button to exit the program mode.
16. Press the 'Unlock' button on each FOB in sequence to finalize the FOB matching sequence.

Important! Failure to exit programming mode (press OFF/ACC) prior to pressing the Unlock button of each FOB programmed will result in that FOB being inoperative. Pressing the UNLOCK button completes the programming sequence and is required to ensure transmitter operation.

Re: Will 2008 key fob work on 2006 ?

Originally Posted by stephenstay

I purchased a 2007 STS-V from a dealer that came with a 2008 fob. The dealer was driving the car and said he liked the newer style better. I don't know if there are any "tricks" to make it work but I do know that mine is working fine.

Re: Will 2008 key fob work on 2006 ?

The new style fob's key is a different blank so some handiwork is required to match an old-style key to a new-style fob. Tomm sourced a bunch of the new fobs awhile ago and there were a couple of threads on the topic.

I think the valet key is separate and the one in the fob is full-function.

Re: Will 2008 key fob work on 2006 ?

It works great just finished programing the new remote today. First I ordered off ebay this part number 25943676 which is 2011/2008 remote with remote start and proximity this one came off a 2011 Cts-v.
I used method 2 down below first added the 2008 FOB as FOB 3 and the it was easy as pie. I tried some functions and remote start would not work. Second I used method three from below and reset all FOBs then programed 2008 FOB as FOB1 and 2006 FOB as FOB2 and finally 2006 FOB2 as FOB3 at first the remote start would not work again I thought maybe I received a broken 2011 FOB. I restarted the car and then the 2008/2011 FOB worked. Here are some notes I am pretty sure you have to restart the car for the remote start to work with any new additional FOB. Note 2 the key from a 2006 will need to be machined to fit into the hidden key space in the 2008/2011 FOB.

Originally Posted by coolbreeze

I purchased a 2008 FOB off of Ebay for my 2006 STS. I followed the instruction below which I got from this forum. I reprogrammed the 2008 FOB as #1 and my 2006 FOB #2 as #2 and the #1 FOB as #3.

Success - My wife's 2007 1SE is not a brick! Both FOB's work fine. Previously posted procedures (and the Owners Manual) are essentially correct but not perfect. I'm sure I won't be either but here's my attempt:

Matching Transmitters to Your Vehicle

There are three procedures based on your particular situation. Method 1 adds additional Transmitters (FOB's) when you have a known FOB. Method 2 adds FOB's when you have no known FOB's and one or more replacements (that have never been matched to your STS) in hand. Method 3 resets already known FOB(s) and allows up to 4 FOB's to be matched.

- Method 1 -
The Owners Manual is correct.

- Method 2 -
The Owners Manual contains this procedure but it is written such to suggest that the procedure pertains to Canadian owners. Based on my experience, it should work for US owners with no known FOB's needing to match one or more replacements. Please beware that the actual procedure may contain some small varience from the manual (see below) but is accurate enough to acheive success.

- Method 3 -
This procedure will first erase all known FOB's. The procedure will then program a single FOB or multiple FOB's. Like Method 2, Method 3 is a series of three 10-minute key cycles, for a total of 30 minutes. This procedure requires that you have the vehicle's mechanical key.

Important: Do not place any known good FOB's within 10 feet of the vehicle when programming with Method 3. If the vehicle recognizes a known good FOB during programming, the programming mode will resort to Method 1.

1. The vehicle must be OFF.
2. Insert the vehicle key in the driver door lock cylinder located in the driver door handle and cycle the key 5 times within 5 seconds. (I left the door open throughout.)
3. The DIC will display a message: OFF/ACC TO LEARN.
4. Press the OFF/ACC portion (bottom) of the ignition button.
5. The DIC will display a message: WAIT 10 MINUTES, and then begin to count down from 10 to 0, one minute at a time.
6. When the counter reaches 0, DIC will display OFF/ACC TO LEARN.
7. Repeat steps 4-6 two more times, for a total of 30 minutes.
8. At the end of the 30 minute cycle, the DIC will display OFF/ACC TO LEARN.
9. Press the OFF/ACC portion (bottom) of the ignition button.
10. A beep will occur and the DIC will display: NO FOBS RECOGNIZED. At this time all previously known FOB's have been erased. Then the DIC displays: READY FOR FOB 1.
11. Go get the FOB you want to be #1 and insert it in the FOB pocket. (According to a posting elsewhere on the STS Enthusiast Forum, new style square FOB's may need the key inserted in the FOB in order to be programmed.)
12. When FOB 1 is programmed, a beep will be heard and the DIC will display a message: READY FOR FOB 2.
13. Remove FOB 1 and set it aside. It does not need to be removed from the car.
14. Additional FOB's can be programmed by getting them and placing them in the pocket as prompted. If desired, up to 4 fobs can be programmed. Once 4 fobs have been learned, the DIC will display a message: MAX FOBS LEARNED, and automatically exit the program mode.
15. If learning less than 4 FOB's, press the OFF/ACC portion of the ignition button to exit the program mode.
16. Press the 'Unlock' button on each FOB in sequence to finalize the FOB matching sequence.

Important! Failure to exit programming mode (press OFF/ACC) prior to pressing the Unlock button of each FOB programmed will result in that FOB being inoperative. Pressing the UNLOCK button completes the programming sequence and is required to ensure transmitter operation.

Re: Will 2008 key fob work on 2006 ?

I purchased a 2008 FOB off of Ebay for my 2006 STS. I followed the instruction below which I got from this forum. I reprogrammed the 2008 FOB as #1 and my 2006 FOB #2 as #2 and the #1 FOB as #3.

Success - My wife's 2007 1SE is not a brick! Both FOB's work fine. Previously posted procedures (and the Owners Manual) are essentially correct but not perfect. I'm sure I won't be either but here's my attempt:

Matching Transmitters to Your Vehicle

There are three procedures based on your particular situation. Method 1 adds additional Transmitters (FOB's) when you have a known FOB. Method 2 adds FOB's when you have no known FOB's and one or more replacements (that have never been matched to your STS) in hand. Method 3 resets already known FOB(s) and allows up to 4 FOB's to be matched.

- Method 1 -
The Owners Manual is correct.

- Method 2 -
The Owners Manual contains this procedure but it is written such to suggest that the procedure pertains to Canadian owners. Based on my experience, it should work for US owners with no known FOB's needing to match one or more replacements. Please beware that the actual procedure may contain some small varience from the manual (see below) but is accurate enough to acheive success.

- Method 3 -
This procedure will first erase all known FOB's. The procedure will then program a single FOB or multiple FOB's. Like Method 2, Method 3 is a series of three 10-minute key cycles, for a total of 30 minutes. This procedure requires that you have the vehicle's mechanical key.

Important: Do not place any known good FOB's within 10 feet of the vehicle when programming with Method 3. If the vehicle recognizes a known good FOB during programming, the programming mode will resort to Method 1.

1. The vehicle must be OFF.
2. Insert the vehicle key in the driver door lock cylinder located in the driver door handle and cycle the key 5 times within 5 seconds. (I left the door open throughout.)
3. The DIC will display a message: OFF/ACC TO LEARN.
4. Press the OFF/ACC portion (bottom) of the ignition button.
5. The DIC will display a message: WAIT 10 MINUTES, and then begin to count down from 10 to 0, one minute at a time.
6. When the counter reaches 0, DIC will display OFF/ACC TO LEARN.
7. Repeat steps 4-6 two more times, for a total of 30 minutes.
8. At the end of the 30 minute cycle, the DIC will display OFF/ACC TO LEARN.
9. Press the OFF/ACC portion (bottom) of the ignition button.
10. A beep will occur and the DIC will display: NO FOBS RECOGNIZED. At this time all previously known FOB's have been erased. Then the DIC displays: READY FOR FOB 1.
11. Go get the FOB you want to be #1 and insert it in the FOB pocket. (According to a posting elsewhere on the STS Enthusiast Forum, new style square FOB's may need the key inserted in the FOB in order to be programmed.)
12. When FOB 1 is programmed, a beep will be heard and the DIC will display a message: READY FOR FOB 2.
13. Remove FOB 1 and set it aside. It does not need to be removed from the car.
14. Additional FOB's can be programmed by getting them and placing them in the pocket as prompted. If desired, up to 4 fobs can be programmed. Once 4 fobs have been learned, the DIC will display a message: MAX FOBS LEARNED, and automatically exit the program mode.
15. If learning less than 4 FOB's, press the OFF/ACC portion of the ignition button to exit the program mode.
16. Press the 'Unlock' button on each FOB in sequence to finalize the FOB matching sequence.

Important! Failure to exit programming mode (press OFF/ACC) prior to pressing the Unlock button of each FOB programmed will result in that FOB being inoperative. Pressing the UNLOCK button completes the programming sequence and is required to ensure transmitter operation.

just did this on my 07, worked perfectly! I had two 07 remotes, and I just added an 08 remote. The 08 is programmed as #1, 07 #2 as 2, and 07 #1 as 3.